1 /************************************************************************** 2 * 3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #ifndef ST_CONTEXT_H 29 #define ST_CONTEXT_H 30 31 #include "main/mtypes.h" 32 #include "pipe/p_state.h" 33 #include "state_tracker/st_api.h" 34 #include "main/fbobject.h" 35 36 struct bitmap_cache; 37 struct blit_state; 38 struct dd_function_table; 39 struct draw_context; 40 struct draw_stage; 41 struct gen_mipmap_state; 42 struct st_context; 43 struct st_fragment_program; 44 struct u_upload_mgr; 45 46 47 #define ST_NEW_MESA (1 << 0) /* Mesa state has changed */ 48 #define ST_NEW_FRAGMENT_PROGRAM (1 << 1) 49 #define ST_NEW_VERTEX_PROGRAM (1 << 2) 50 #define ST_NEW_FRAMEBUFFER (1 << 3) 51 #define ST_NEW_EDGEFLAGS_DATA (1 << 4) 52 #define ST_NEW_GEOMETRY_PROGRAM (1 << 5) 53 #define ST_NEW_VERTEX_ARRAYS (1 << 6) 54 55 56 struct st_state_flags { 57 GLuint mesa; 58 GLuint st; 59 }; 60 61 struct st_tracked_state { 62 const char *name; 63 struct st_state_flags dirty; 64 void (*update)( struct st_context *st ); 65 }; 66 67 68 69 struct st_context 70 { 71 struct st_context_iface iface; 72 73 struct gl_context *ctx; 74 75 struct pipe_context *pipe; 76 77 struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader; 78 79 struct draw_context *draw; /**< For selection/feedback/rastpos only */ 80 struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */ 81 struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */ 82 struct draw_stage *rastpos_stage; /**< For glRasterPos */ 83 GLboolean clamp_frag_color_in_shader; 84 GLboolean clamp_vert_color_in_shader; 85 boolean has_stencil_export; /**< can do shader stencil export? */ 86 87 /* On old libGL's for linux we need to invalidate the drawables 88 * on glViewpport calls, this is set via a option. 89 */ 90 boolean invalidate_on_gl_viewport; 91 92 boolean vertex_array_out_of_memory; 93 94 /* Some state is contained in constant objects. 95 * Other state is just parameter values. 96 */ 97 struct { 98 struct pipe_blend_state blend; 99 struct pipe_depth_stencil_alpha_state depth_stencil; 100 struct pipe_rasterizer_state rasterizer; 101 struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS]; 102 GLuint num_samplers[PIPE_SHADER_TYPES]; 103 struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS]; 104 GLuint num_sampler_views[PIPE_SHADER_TYPES]; 105 struct pipe_clip_state clip; 106 struct { 107 void *ptr; 108 unsigned size; 109 } constants[PIPE_SHADER_TYPES]; 110 struct pipe_framebuffer_state framebuffer; 111 struct pipe_scissor_state scissor; 112 struct pipe_viewport_state viewport; 113 unsigned sample_mask; 114 115 GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */ 116 117 GLuint fb_orientation; 118 } state; 119 120 char vendor[100]; 121 char renderer[100]; 122 123 struct st_state_flags dirty; 124 125 GLboolean missing_textures; 126 GLboolean vertdata_edgeflags; 127 128 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */ 129 const GLuint *vertex_result_to_slot; 130 131 struct st_vertex_program *vp; /**< Currently bound vertex program */ 132 struct st_fragment_program *fp; /**< Currently bound fragment program */ 133 struct st_geometry_program *gp; /**< Currently bound geometry program */ 134 135 struct st_vp_variant *vp_variant; 136 struct st_fp_variant *fp_variant; 137 struct st_gp_variant *gp_variant; 138 139 struct gl_texture_object *default_texture; 140 141 struct { 142 struct gl_program_cache *cache; 143 struct st_fragment_program *program; /**< cur pixel transfer prog */ 144 GLuint xfer_prog_sn; /**< pixel xfer program serial no. */ 145 GLuint user_prog_sn; /**< user fragment program serial no. */ 146 struct st_fragment_program *combined_prog; 147 GLuint combined_prog_sn; 148 struct pipe_resource *pixelmap_texture; 149 struct pipe_sampler_view *pixelmap_sampler_view; 150 boolean pixelmap_enabled; /**< use the pixelmap texture? */ 151 } pixel_xfer; 152 153 /** for glBitmap */ 154 struct { 155 struct pipe_rasterizer_state rasterizer; 156 struct pipe_sampler_state samplers[2]; 157 enum pipe_format tex_format; 158 void *vs; 159 struct bitmap_cache *cache; 160 } bitmap; 161 162 /** for glDraw/CopyPixels */ 163 struct { 164 struct gl_fragment_program *shaders[4]; 165 void *vert_shaders[2]; /**< ureg shaders */ 166 } drawpix; 167 168 /** for glClear */ 169 struct { 170 struct pipe_rasterizer_state raster; 171 struct pipe_viewport_state viewport; 172 void *vs; 173 void *fs; 174 boolean enable_ds_separate; 175 } clear; 176 177 /** used for anything using util_draw_vertex_buffer */ 178 struct pipe_vertex_element velems_util_draw[3]; 179 180 void *passthrough_fs; /**< simple pass-through frag shader */ 181 182 enum pipe_texture_target internal_target; 183 struct gen_mipmap_state *gen_mipmap; 184 struct blit_state *blit; 185 186 struct cso_context *cso_context; 187 188 int force_msaa; 189 void *winsys_drawable_handle; 190 191 /* Active render condition. */ 192 struct pipe_query *render_condition; 193 unsigned condition_mode; 194 195 int32_t draw_stamp; 196 int32_t read_stamp; 197 198 struct st_config_options options; 199 }; 200 201 202 /* Need this so that we can implement Mesa callbacks in this module. 203 */ 204 static INLINE struct st_context *st_context(struct gl_context *ctx) 205 { 206 return ctx->st; 207 } 208 209 210 /** 211 * Wrapper for struct gl_framebuffer. 212 * This is an opaque type to the outside world. 213 */ 214 struct st_framebuffer 215 { 216 struct gl_framebuffer Base; 217 void *Private; 218 219 struct st_framebuffer_iface *iface; 220 enum st_attachment_type statts[ST_ATTACHMENT_COUNT]; 221 unsigned num_statts; 222 int32_t stamp; 223 int32_t iface_stamp; 224 }; 225 226 227 extern void st_init_driver_functions(struct dd_function_table *functions); 228 229 void st_invalidate_state(struct gl_context * ctx, GLuint new_state); 230 231 232 233 #define Y_0_TOP 1 234 #define Y_0_BOTTOM 2 235 236 static INLINE GLuint 237 st_fb_orientation(const struct gl_framebuffer *fb) 238 { 239 if (fb && _mesa_is_winsys_fbo(fb)) { 240 /* Drawing into a window (on-screen buffer). 241 * 242 * Negate Y scale to flip image vertically. 243 * The NDC Y coords prior to viewport transformation are in the range 244 * [y=-1=bottom, y=1=top] 245 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where 246 * H is the window height. 247 * Use the viewport transformation to invert Y. 248 */ 249 return Y_0_TOP; 250 } 251 else { 252 /* Drawing into user-created FBO (very likely a texture). 253 * 254 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering. 255 */ 256 return Y_0_BOTTOM; 257 } 258 } 259 260 261 /** clear-alloc a struct-sized object, with casting */ 262 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T)) 263 264 265 extern int 266 st_get_msaa(void); 267 268 extern struct st_context * 269 st_create_context(gl_api api, struct pipe_context *pipe, 270 const struct gl_config *visual, 271 struct st_context *share, 272 const struct st_config_options *options); 273 274 extern void 275 st_destroy_context(struct st_context *st); 276 277 278 #endif 279
